First-stage treatment for box-wrapping machines.



M. E. PETERS G. H. FATH & A. F. MILLER. FIRST STAGE TREATMENT FOR BOXWRAPPING MACHINES.

APPL ICATIO N FILED SEPT-25. 1916. 1,251,813.

Patented Jan. 1, 1918.

5 SHEETS-SHEET I.

M. E. PETERS, G. H. FATH & A. F. MILLER. FIRST STAGE TREATMENT FOR BOXWRAPPING MACHINES.

Patented Jan. 1, 1918;

5 SHEETS-SHEET 2:

APPLICATION FlLED SEPT- 25, l9 I 6 M. E. PETERS, G. H. FATR & A. F.MILLER. FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

APPLICATION FILED SEPT. 1916.

Patented Jan. 1, 1918.

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M- E- PETEHS, G. H. FATH & A. F. MILLER.

FIRST STAGE TREATMENT FOR BOX WRAPPING MACHINES.

' APPLICATION FILED SEPT- 25. 1916- 1,251,813, Patented Jan. 1, 191&

. 5 SHEETS-SHEET 4- :JLLLLULLI di/Jwg,

7" ses:

mm M.

M. E. PETERS, e. H. FATH & F. MILLER. FIRST STAGE TREATMENT FOR BOXWRAPPING MACHINES.

. I APPLICATION FILED SEPT- 25, T T fi- 1,251,813. Patented Jan. 1,1918.

5 SHEETS-SHEET 5.

s 'Ar MELVILLEiE. PETERS, GEORGE H. BATH, AND ALBERT F. MILLER,lornnnyvnn, COLO- RADO; ASSIGNORSITU riinrn'rnns EATENT RIGHTS COMPANY,on nnnvnn, COLO- .RADO, .A-..CORP.ORATIONJ 0E,- COLQRADO.

F nsms'rAcE ,rnnn'rrannr, on BO -WRAPBING, inseam-es.

s pecification of LettersPatentf Patented Jan-.1, 1918,.

Original application filed November 5, 1915,3eria1 No. 59,860. 1 Dividedand this application filed September 25, 1916. Serial No. 122,054.

To all whom it mag concern:

Be it known that We, MELVILLE E. PETnRs, GEORGE H. FATH, and ALBE TFJMILIJJR, citizens of the United States of America, residing at thecity and county of Denver 'and'State of Colorado,- have invented anewand useful First-Stage Treatment-for-Boxis a speci cation. I

Our invention relatesto improvements in first stage box and blank unitinand partially wrapping mechanismfor box Wrapping machines; and theobjects of ourjinvention are: p a

First, to provide means for receivi'nq and positioninggummed blanks andpasteboard VVrappin Machines, of WhlCli'tll e fOllOWlIlg.

box shells onverticallyreciprocatino phingers, in such operativerelation to eac 1 other as will enable said plunger's to so manipulatethe box andblank that 'the-bottom of each box Will be glued to gummedsurface of each cooperating blank. 7

Second, to provide means whereby said plunger cooperates withnon-vertically movingside" and corner wiper mechanism to Wrap each blankagainst the opposite sides and corners otits cooperating-box. And

Third, to providea first stagebox and blank uniting and partiallyWrapping box Wrapping machine in Which automatic means is provided forwrappingthe bottom, sides, corners and ends ofboXes with printedorunprinted blanks or labels, and 'for discharging them from the wrappingmechanism, the box-and blank operating mechanism being'especi'allyadapted to produce a machine that will partially Wrap a larger number ofboxes per minute than those at present in use.- p r Our presentinvention relates tomechanism for partially Wrapping'gummed blanksaround a box and appertains tothe coo'perative actlons of two, varlablestrokevert1- cally alined and movable plungers that-carry the blank andbox' down through non-vertically' movable-sidewipers that are providedwith a cooperating resiliently yielding and cushioning pressure lateralmovement.

Consequently our present invention effects only; thepartialwrappingof abox. by and With a gumnied blank. The mechanism of our present inventioncan be seen; cooperatively combined in a. complete box? Wrapping machinethat forms the subj cot-matter .of our pending application b'erial' No.

59,860 filed November 5, 1915, and: our present application is adivisional part: thereof.

We consequent-1y attain these objects'by the mechanism illustratedin:theaccompanying drawings, in which:

Figure 1, is a slde elevationof a portion Fig. 2, isfan' e delevation ofthe table portion of the machine, showing the side of a box Wrappingmachine, illustrating the first stage treatment mechanism.

"Wiper-s, the end' turn-in blades and mecha- \111SII1' by v'vhich-theseparts are operated.

Fig. 3, is a vertical, longitudinal sectional view of the portion ofthemachine shown-in Fig. 1, illustrating'the relative positions or the sideand 'end Wipers, and their connecin connection With extension'bott'omboxes.

Fig. 8, is an end'vi'ew of Fig. 6. i v Fig. 9, is aplan view of'aportion of. the

bed plate of the machineshowi'ng; more particularly the cam operatedlevers which "are employ ed in operatingthe side Wipers 1n wrapplngordinary boxesor those having an extension bottom, together With theshifting lever-for locking ther'equired camoperated lever'to a rockshaft.

' Fig. 10,- is a front view ofthe supporting and operating mechanism forthe upper plunger or, DOX form. i

. p '95 Fig, 11', is a side, elevation ofpart of the Fig.7, isaside viewof th'e device carried by the side wiper support,and}-Which is usedmechanism shown in Fig. 10, the boxform being broken away to show thebox stripper.

' And Fig. 12, is a horizontal sectional view, enlarged, showing theupper plunger bar and its slideway, the box stripper rod, and the latchfor locking the stripper bar to the slideway head block. P

Similar letters of reference refer to similar parts throughout theseveral views.

Referring to the drawings The numeral 1 vdesignates a supporting frame,which preferably is of box shape,

but which if desired may be of-any other practical shape. The supportingframe however as illustrated consists of a base plate. 2, opposite, sideplates 8 projecting upward from the base plate, and a top flat tableportion 4. p

Through the center of the table Portion-4L of the machine, an apertureis formed, in which a vertical plunger bar 5 is reciprocally mounted inadjustable slideway bearings 6 that are attachedto the upper side of thetable portion 4 of the frame. The lower end of this bar is connected tothe upper end of a cam fork 7, the lower end of which engages a cam disk8 that is secured on the main driving shaft. 9 of the machine. The upperend of the plunger bar is provided with a flange 10 that is secured to ablock 11 of wood or other suitable material that is made of the size andwidth of the bottoms of the particular sizes of box that are to bepressed against it. The top surface of this block is covered by acushion of leather 12 or other suitable material, against which thebottoms of the boxes rest.

Our plunger and side and corner mechanism will partially cover or wrapboxes of from about 3 inches long by 1 inch wide by s} inch deep, up toboxes of about 14 inches long by 8 inches wide by 3 inches deep, buteach different size of box must have aplunger block 11 that will fititseutside bottom length and width dimensions, as each blank restscentrally on top of this block and each box is fed to rest centrally onthe blank and to rest also centrally on the top of the block, whichforms a movable support for the blanks andthe boxes.

Above this lower plunger block and in vertical axial alinement with it,an upper plunger bar 13 is reciprocally mounted in suitable slideway'bearings 1i that are formed in an overhanging bracket arm 15 which issecured to the box frame of the machine. The lower end of thisplunger'bar is provided with a block 16 which we term a box form, as itis made enough smaller than the box and the block 11 of the lowerplunger to fit snugly inside of the boxes.

The boxes are fed automatically centrally over the top of the blanksandin that position the upper plungers box form descends directly intothe box against its bottom and presses the bottom of the box down tightplunger block first'receives the blank and v the box shell is thehighest point or center of its vertical reciprocal movement. Conse- Vquently whenthe upper plunger form descends intothe box against itsbottom, it

instantly presses it and the blank against the block of the lowerplunger, which forms an abutment to the pressure of the form of theupper plunger of suihcient resistance to glue the bottom of the box tothe gummed surface of the blank upon which the box rests.

The lower plunger, is then drawn downby its cam and is forced downbetween theside wipers 17, and as these two plungersmove down togetherthe upper plunger which is arranged to, move slightly faster than thelower plunger bears andconsequently crowds down against it and thusholds the bottom with aconstant pressure against the top of.-

the lower plunger, and as the lower plunger moves slower onits downstroke than the upper plunger, the upper plunger in order to yield totheslower down movement of the lowe'r plunger is provided with a coiledspring 18, which is mountedon a bolt 19.-

This bolt is provided with an eye 20 that. is screwed upon the bolt.This eye 20 is loosely mounted on a-stud bolt 21 which is threaded "ninto the side of the reciprocal plunger bar 18. The opposite end of thespring provided bolt is provided with a pin 22 against which a washer 23bears, and the spring 18 is mounted on the bolt and bears resiliently atone end against the washer and at its opposite end against the underside of one end of an eye bolt 24, that is loosely; mounted on the bolt19 and which is held under adjusted tension on the bolt by two nuts 25which are screwed down against the eye bolt;

and enough farther to cause the eye bolt to compress the spring untilthe eye bolt and the reciprocating plunger bar are under the desiredtension. The eye bolt is provided lug that forms the terminal end ofalever 26, the opposite end of which is pivotally secured to a yoke 27that is formed on an arm portion 28 of ayoke-shaped frame 29 which witha threaded stud portion that extends; loosely through andis secured by anut to a a rod 30, one end of which is provided with g a yoke lug3lwhich straddlesithe lever and a pivotal bolt 32 'is extended throughboth the lug 31and the lever. The lever has-an elongated slot 33 and thepin 32 carries a mamas roller 34 which engages the'edges of the slot, asthe lever is raised and lowered, the-said slot-permitting; the verticalmovement of the rod 30, as will be understood. The opplosite end of thisrodis connected to a lever 35, whichis arranged to be engagedby a cam36, that is formed on a. disk 37 which is secured on the main drivingshaft 9. This main driving .pshaft is positioned ,in the box frame abovethe base plate and: it extends alongthe center ofthe width andthroughout its length and it is journaled in boxes 38, that are securedto the base plate.

The oppositely arranged side wipers-17 that/turn the upper ends of thesides of the gummed blanks up against the boxes are mounted on twostationary cross'head brackets' 39 that are secured to the top ofthetable portion; of the frame, and they arearranged on opposite sidesof 'the box supporting plungers 11 and 16. These side wipersgpref erablyconsist of pieces ofwood, the. blank engaging faces of which arecovered'with strips of felt 40 or other suitable material which is gluedor is otherwise secured'to each wiper. These wipers areremovably-secured to projections 41 that are formed on cross heads'42that are slidably mounted in 'slideways that are formed-in theb'ra'ckets 39. There are two of these brackets, one on each'sideof theupper and lower plungers,

and thesetwo plun'gers reciprocally carry. each box and blank betweenthese side wipers. These side brackets are positioned *parallel with thelongitudinal length of. the

box wrapping machine, and are secured" to the top of the tableportion ofthe. frame. These brackets we term the side cross head brackets. Thesebrackets have a central standard portion and two laterally extendingWing portions 43, as will beseen byrei .erence to Figs. 1, 2, 3 and 4.They eachsupport one side and two endwrapping. mechanisms. The underslde ofeach cross head 18 providedwith a gear toothed rack portion44,'which isengaged by a toothed. segment portion45 that is formed onone end of a rockarm 46. These rock arms'yarepivotally secured to thebrackets and their opposite ends are provided w1th-p1votal eye bolt-s47,through which vertically positioned rodsq48 pass loosely. A co1lar:49 issecured on each rod by a set screw, and anexpansive spring .50 ismounted-0n the rod between the collar andthe eye bolt 47. Theupper end iof each rod is threaded and a collar 51 is pinned to it, which engagesthe eye bolt47 on-thedownward movement of the rod 48.

. The rods 48 extend .down through bosses 52 on the brackets 39, andthrough thetable, and reston the ends of a bar 53,,the central :portionof which is secured. to a vertical plunger 54 that is reciprocallymounted in a slideway formed in atransverse; bracket .55,

that is bolted to the sides of the frame. The

the ar1ns 61 and66 together, while'the arm 6'5fis disconnected from thearm 60. The arm 60 and its actuating cam face '62' operthe cam shaft 1Betweenithe armsGO'and '61'and also rigidly mounted on' the shaft '58are inte'grally, connected short arms65 and 1 66, th'e inner, ends of"which are provided with holes, which are'in line'with correspond- 8-0mg. holes in the arms 60 and 61 A hand le- :ver 67 is mountedfonthe hubportion of the I armsjfiii and 66, and its -fori'vard 'en'd iszpivo'tallyfattachedfto a locking pin 6'8, which is slidably,mountedlin theinner ends of the short arms 65'and66. Thelocking'pin is of I such alength that when thelever 67 is shifted"1nth'e direction of the arrow,the said Pi piroj cctsthrou gh the "hole "in the arm16'6 and intotheholin the arm-61, thus'locking'90 ate in connection with boxes ofthe'ordinary type, w'hile the arm 61 and its actuating'cam face" 68 operatein connection" with boxes havlng 'GX CGIISIOTI bQttOIIIS', therespective cam grooves being'arranged to that end.

' Thus when boxes ofthe usual type are "being.

covered, the arm'6l'is notneeded, and when extensionbottomfb'oxes'arebeing covered the garm 60is'out of commission;Therefore, 7 when'bo-xes of the usual type are being cove "cred, theshort arm 65" 'is'vlocked tozthe arm '.'60 by shiftingflever '67,and its'loc'king'pin 68,.an'd when the" arm: 60 is operated by its cam 62, a'corresponding movement isim- [parted to the short arm 65, which islockedtogthe arm 60 by the "pin 68, and as the arm 65' is'j'rigidly=connectedto; the shaft 58, the

said shaft is turned-thereby. and thearm 57, which is also rigidlyattached to the shaft 58', is rocked,.andimovement is thus trans- -mitted'ftotheplungeriarm 54 through the medium oftlie lin'k'56. T The arm161' will"be- 1 15 1 rockedby its cam 63,'b'ut it will performnofunction s n is'not lockedto the "shaft .58; l

Collars '69 are' secured upon the'lower portionsfof the rods 48,and'between thesecol-' larsandjthe lower ends of the bosses- 52, areinterposed coiled springs 70, which act to depress the' rods 48, afterthey have been raisedand then released by the cross bar 53. The verticalmovement of the rods 48 ca'usestheir collars to compress the springs'125some raise: the rock arm46, which causes thetoothed endsofthe rock armswhich engage "the rackbar44 of the cross head 42 to move the wiperblocks against the sides of f the blank and box, and holdit there with a;1 0

\ provided with a pair of horizontally positioned cylinders 71 thatdepend fromit. These cylinders are provided with solid head portions atone end and have nuts 7 72 threaded into them at their opposite ends.Axial apertures are formed through the heads and nuts, in which stems 73are reciprocally mounted, and expansive coiled springs 7 surround thestems. The stems are provided with shoulders in the cylinder against.which washers 75 rest' that receive the thrust ofone end of the springswhen the stems are moved back through the cylinder by mechanism that isattached to their front ends, and the springs'move the stems outforwardly by their expansive tension when the stems are released frombackward pressure. A nut is threaded to the outer end of each stem, bywhich the tension. of the spring can be regulated as desired. The outerends of each pair of stems are threaded into a clip 76, see Figs. 2, 5,and 7, that is provided with a transverse pin 77, upon which is mounteda horizontal rock plate 78, having a depending bifurcated arm 79 inwhich is mounteda roller 80. roller is designed to be engaged by one endof a rock arm 81, which is pivotally secured intermediate of its ends toa support 82, which is bolted tothe inner face of the bracket 39. Theopposite end of the rock arm is connected to a spring 83, which isattached at its opposite end to a pin Set projecting from the bracket39. The plate 78 has a forwardly projecting blade 85 secured upon itsupper face. The pin 77 'hasa surrounding coil spring 86, one end ofwhich engages the clip 76 while its other end enters a collar on the endof the pin 77. This spring normally holds the blade and its supportingplate 78 tilted upwardly, in which position it ismoved against the boxand over its extension lip. As the cylinders 71 move inward with theblocks 17, the roller 80 engages the arm 81, and the plate is ti ted andthe blade engages the blank and presses it down against the extensionportion of the box, the spring 83 affording a compensating movement forthe blade against the box, the blades yielding backwardly from it whenthe cylinders and the block 17 continue slightly. farther toward blankaround the box in tight wrap work is This wipers for each side of thebox.

shaft.

the box to complete their stroke. This arrangement allows the blade toengage the box with a resilient pressure. The roller 80 engages the rockarm 81' as the cylinder moves forward and tilts the plate and its bladedownwardly against the tension of the spring 83 so that the blade exertsadown gvard pressure on the extension lip of the We will now leave thedescription of th 75 extension wrap mechanism and return to thedescription of the tight wrap work mechanism. v

The next step treatment of wrapping the 80 performed by the, cornerwipers 87. These corner wipers are used to wrap the end portions of thesides of the blank around the corners of the box as shown in Fig. 4:,just of which is secured to a collar 92 on the lower end of the pin andthe other end of the spring is secured to the adjacent lug 88. Eachblock 89 is tiltingly secured to the end of a toothed rack bar 93 byapin 94:

and this block is also tiltingly secured by a pin 95 to a similar rackbar 96. The two bars 93 and 96are mounted parallel to each other in aslideway bracket 97 that is ad:

justably secured in slots 98 that are formed in each end portion of thebracket 39 by bolts-99, there being two sets of these corner 1 Eachtoothed rack bar 93 is engaged by a gear 100 that is provided with sidetrunnions that are mounted in bearings 101 that are formed in the sidesof the slideway bracket 97. Each bracket 39 is provided with bearings102 at its ends, in which are mounted'square shafts 103 having roundbushings which turn in the said bearings 102, and upon the respectiveshafts are 'slidably mounted the gear wheels 100, two gear wheels beingon each The gear wheels occupy the 'posi tion shown in Fig. 4, or inother words mesh with the toothed bars 93, when tight wrap boxes arepassed through the machine, and for loose wrap boxes, the gears 100 areshifted to engage the toothed bars 96. The gears have short trunnions,one of which enters the opening in the adjacent side of the slidewaybracket when the gear is in meshwith the toothed bar 93, while the othertrunnion enters the opening in the other side of the bracket 97 when thegear is in mesh with the'toothed bar 96. The slideway is formed withacentral partition 130 55 the corner of the'box, owing totheconseiii-mesh with'eitlier ofthe toothed'bars 93- web 104, whichseparates the toothed bars 93 and 96,- the said web having a semicircular recess topermit of thelateral shifting of the gear wheels 100.U'pon'theouterend of the partition'web of each sli'deway'is secured 21blade spring 105 having a curved portion, which, when the gear wheel 100is or 96, isadapted to bear uponthe adjacent trunnion ,of the saidgea-r-wheel,' and thus preventilateral shifting of the same, as will beunderstood by reference to Fig; 4. Each of the "square shafts 103 -isrotated by a gear 106 that is mounted on its forward end and which isdriven by a vertically l disposed toothed rack portion that is formed oni a bar 1075 that is slidably mounted at its upper end in slideways' 108that are formed in the adjacent ends of the cross head bracket 89; Thelower end of this rack bar is adjustably secured'to a verticallyreciprocating cross head bracket 109. The slots 110 in the lower end ofthe rackbarwhere it connectswith the ends of the reciprocal cross headbracket permit of vertical adjustment of the-rack bar.

The reciprocating bar 93 is moved bya slight throw movement of thevertical upa stroke of the cross'head 109 and the vertical rack bar 107and by itspi-nion 106 and-the pinion 100, against the corner ofthe blankand the corner of the box, which throw movement is sutficientto-tiltingly compress the wiper against its abutment-spring as the wipermoves against and over the corner-of the boxagainst its adjacent edgeswithsulficientresilient pressure to firmly glue the corners o'ftheblanktothe corners of the box. r ifter. the corner wiper has pressed thecorner of the blank againstt-he corner of the box, itis thrown back awayfrom the' box by the frictional engagement of the sliding bar 96with itsSllClWay,Wh1Ch21CtSj to accomplish this throw movement of the wiper inthe following manner: The spring 91 normally holds the wiper in theposition shown in Fig. 4, but the block 89 is slightly't-ilted onboth-its inward and'outwa'rd movement by the frictionalengagementof thetooth bar not operated by the gear 1'0O, -with its slideway' 11] thepresent instance, the bar 93' is engagedby the gear and the barismoved'outward or away from the box. The

pull on the-bar 93 by thegear wheel will cause the block to tilt outwardor away from quent dragging movement of the bar96 upon which an indirectpull is exerted. Thus when the block 89, and its wiper 87 start forwardor towarda box, the wiper is thrown out slightly, but the initialmovement' of the bar 93 tilts the block 89, owing to the indirect pullon the bar 96, and consecorner wiper to tilt against the box as thewiperstarts across the end cornenot' the box, and the bar not operatedby: the gear 100 causes the wiper to tilt away from: the box after ithas completed its corner label wraps ping str-oke. :The reciprocatingcross :heads 1091rec'iprocate the: rack bars-1 07? that rotate thepinions 106 and shaft 108. that through the medium of the gears- 100reciprocate, the bars =-98, which move the wipers torand from and acrossthe surface: of the cornerends of the bOX.'d-t all'four ofits corners,and'leave I 1 the end 'sl o'f the blank glued to the ends of thebox. 9-Loose-wrap1blanks are not providedwith against the ends ofrthe box iasin the manner of: the tightwra'p blank, *a-slight portion: of their'surtaces near? their outer. ends having been gummed duringthe :gummingprocess,

by which the endifflapisheldagainst the box until it reaches thesecondstage position. It will thius bewseenzthat ifthe corner wipers were:permittedto engage the end flaps ofva loose wrap blank on their :inwardmovements,-the edges ot the blank wouldbe drawn aavay fromz the cornersoftherboxin such a manner as to: crumple: and thereby-spoil the said:end: flap. Toxobvia-te this action when performrngloose wrapiwork,thepinions 100 on. thefshafts =103 are shiftedhtot engage the rack bars-96, so t-hat whenthe rack bars '93 V and 96 are moved inwarcha directpush-is" exertedcon'therackbarsi 9.6, while the rack bars: 93 drag 1ntheir sli'dewayc-owing to the indirect pusln exerted uponthem. This 210-i tion tilts l the" blocks 89, which throws f the wipers =87: out i and1 away 'from the; ends of the boxwand maintains them thus during theirinward movement. But the instant the reverse or outward movementof-the-wipers commences, the'direct. pull on. thea'aclr bars 96,andthe-consequentdragging of thehars 93 causes th blocks 89toabe tiltedin the'op posite direct-ion, by which the wipers 87:;are caused: toengagei the endfiaps and: 'beari resiliently; upon them Wl'lllG thevsaidwipers of wrapping the :blank aroundtheuboxis given: by the-end wiperswhichra'ct simultaneously against the opposite ends ofithe' blank:andzwrap them up: againstyand glue them to the oppositeends ofthe box:

The 'end wwipers 111 are designed .to engage the'central portions ofthe, ends of the blanks :and wipingly press them up: against a theends'rof tl16b0X'-=Sh6ll,;2aIld as theyndo this they rfoldiand pressthexendsaof'athe 'blanks over. thercorners-aof the blanlgiwhich havejustbeen glued tostheccorners of the ered with a strip of felt 112 and eachwiper is clampedto a step of a sliding block 113 bya cap 114 and a bolt115. The sliding block 113 is slidingly mounted in a T slot that isformed in the top of a head block 116 that is pivotally secured by twopins 117 to one of the ends of two reciprocating bars118 and 119. Eachof these bars is reciprocally mounted in slideways formed in a bracket120 which is adjustably mounted upon a slotted plate 121 by a bolt 122.This slotted plate 121 is slidably mountedin the table top 4. Thevertical rack bar 118 of each end wiper is reciprocated as follows. Apinion 123 is provided with trunnions which are rotatively mounted inbearings 124 formed in the brackets 120, and a square shaft 125 isextended loosely through the pinions of both brackets. This shaft isprovided at its outer end with a pinion 126 that meshes with a rack bar127 which is slidably mounted in bearings 128 and 129 that are formed ona bracket 130, which is secured to the end of the table. The lower endof this rack bar 127 is connected to one end of a reach rod 131, theopposite end of which is connected to the upper end of a forked lever132, the opposite forked end of which straddles the main shaft. Thislever is provided with a roller 133, that engages a cam 134 whichimparts a reciprocal movement to said rack bar, and rotates the pinion126 which turns the square shaft 125 and the pinions 123 that raise therack bars 118 which tilt the head blocks 116 on their pins and causetheir wipers 111 to tilt against the adjacent end of the blank and box,the instant the rack bars 118 are started upwardly by the pinions 123.Each tilting block tilts on the pin 117 toward the box, which throws thewiper 111 against the box and the tilting of the head block isaccomplished by the dragging action of the bar 119, which is held in itsslideway by a friction pressure which may be applied to it in anysuitable manner but which I preferably create by a friction button 135which is mounted loosely in the bracket and is held by a spring 136against the said bar 119 with suflicient adjustable pressure to causethe bar to fit tight enough to hold the tilting block down in its tiltedposition. The pinions as they are rotated by the square shaft raise therack bars and cause the wipers 111 to rubbingly bear against the end ofthe blank and box and to move upwardly across its adjacent ends to itstop edge, and thus firmly glue the blank to the box over the top of thecorners of the blank that were just an instant before glued to thecorners of the box. The end wipers bear against the ends of the box witha resiliently yieldingpressure, which is imparted to each of them by anexpansive spring 137 which is mounted on a pin 138 that is extendedloosely through an arm 139 formed on the head block 116, and is threadedinto the sliding block 113. The forward throw stroke of the head block116 is greater than that necessary to move the wiper against the box sothat the block 113 slides on the head block 116 after the wiper has beenmoved against the end of the box. blocks 111 press'the ends of theblanks with ayielding pressure against the opposite ends of the box. Theinstant the wipers have moved up over the ends of the box, the cam 134reverses the movement of the rack bar 127 and the direction of therotary movement of the pinion 123, causing the rack bars 118 to movedownward and at the instant they start down they pull down on the pins117, which cause the head blocks to tilt on their pins of the bars 119and this tilting movement of the blocks on their pins causes the wipers111 to move far enough away from the ends of the box to entirely leavethe same for about a sixteenth of an inch, and the friction bars 119hold the tilt ing blocks in that position as they bear with a frictionfit in their slideways tight enough to cause the rack bars to have topull down on the head blocks with a sufficient pressure Consequently thewiper to hold the blocks in their thrown back bolted to the bracket 130.A rod 142 extends through this cup and its lower end is threaded andprovided with nuts which strike the bottom of the cup and define thestroke of the rod. The upper end of this rod engages the under edge ofan arm 143 that is secured to the side of the rack bar 127. The spring140 is an expansive tension spring and its lower end rests against. thebottom of the cup 141 while its upper end bears against a cap 144 thatis slidably mounted in the cup and is secured to the rod 142.

The arrangement of the rack bar 127 with respect to the reach bar 131,as shown in Figs. 1, and 3, is for wrapping ordinary boxes or such asare not provided with extension bottoms. The rack bar 127 is provided atits lower portion with a slot 145 and a block 146 is bolted to the upperend of the bar 131, and is provided with a recess in which rests thelower end of the rack bar resi ts 1'27, and the bar is held within therecess'by a cap 147. A pin 148 passes through the lower end of the rackbar 127 and bears against the lower'end of the block 146, and anadjustable block 149 bears against the upper end ofthe block 146, and issecured to the rack barby a bolt 150 which passes through the slot 145.Thus arranged, the cam fork 132, the reach bar 131 and the rack bar 127move'in unison as will be'understood, and with theseparts thus arranged,as "shown by Fig. 3, the end wipersere raised high enough to accomplishthe end wiping of boxes of the greatest depth for which the machine isset. In wrapping boxes of lessdepth, however, the rackibar 127 must havea shorter stroke .in' order, to diminish the rotative travel of the gearwheels 123,'and to accomplish this, the adjustable block is moved up asuitable distance above the block 146, and is firmly clamped to the rackbar byfits bolt 150. Thus the movement of the cam 134 "will raise thereach bar a short distance before theblock 146 engages the block 149,after which the rack bar and reach bar move up'in unison. It isnecessary however that the rack bar should start to move upwardsimultaneously with the reach bar and move far enough to raise the endwipers 111 from the positions shown in Fig. 3, to a position where theirunder sides are on a plane with the upper faceof the lower plunger; andthis is accomplished by the spring 140, which lifts the rod 142, theupper end of which engages and exerts an upward pressure against theprojection 143, on the rack bar 127, by which the pin 148 in the lowerend of the rack bar is held in engagement with the block 146 of thereach bar, and the rack bar, through the action of the spring 140, movesup with the reach bar, until'the nuts 151 on the end of the rod 142,engage the bottom of'the housing 141, and the further action of thespring is thereby checked.

After a momentary pause, during which when extension bottom boxesare-being covered the end wipers are moved in'toward and against theends of the box, the cam again begins to raise the reach'bar, and

moves it until the block 146 engages the adjustable block 149, when therack bar will thenbe raised far enough to complete its operation, beingmoved a distance corresponding to the depth of boxes passing through themachine. As the rack bar 127 descends, its projecting arm 143 engagesthe upper end of the rod 142 in the housing 141, and

the spring 140 is compressed and the rod 142 depressed to the positionshown in Fig. 3. V

In extension bottom box work, it is necessary that the end'wipers 111should move up until their under sides are on a level with the upperface of the box bottom, and then "ed in the sides of the table.

moveinward against'the ends*of the'box=a distancefequal to the width ofthe' extension,

and this is 'accomplis'he'cl in the following mannerz'The racks 118 movethe blocks 116 upward until the wipers are flush with the top edges ofthe extension bottom, then the racks reverse and tilt the block and instantly thereafter the-cam 64 operates'th'emechanism to be presentlydescribed, which causes-wipers 111'to move inwardly over-the extendededges of the box. Then rack bars 118 'move upward again, "tilting thewipers 111 intothe corner of extended edges and upward, wiping the endofthe blank against the'box. Theinward' movementof the end 7 wipersagainst the ends of the box is accomplished in the followlng manner:

The head blocks 120aread ustably secured to the slotted plates 121,which have a sliding movement'in the table, and each plate 121 has adepending bifurcated-lug 152, at its outer-end, to which one endof alink153 ispivotally secured, and the other ends of these links areconnected to'levers 154 and 155, which are rigidly secured upon shafts156 and 157 respectively,-which are mount- The lever 154 is a bell crankform of lever,'and its other member is connected tothe upper end of arod 158, the lower end of which has a collar 159 secured thereon; a coilspring 160 surrounds this end of the rod and bears against forms anintegral part of the cap of the adjacent bearing standard 38. The shaft165 extends beyond the hub of the double armed lever and upon its'outerend a collar 167 is rigidly secured. A coil spring 168 is mounted on theshaft between the collar and the hub of the doublearmed' lever, one endof said spring entering'a hole in the collar while its opposite endenters a hole-in the hub of the lever, theispring' being under a tensionthatwill hold the roller 164 in contact with the periphery of the disk64. The outer ends of the shafts 156 and'157 carry respectively levers169 and 170, the lever 169 extending upward, while the lever 170 ex-'tends downward, and the ends of these le vers are connected bya rod 171.I

Thus wheirthe camkon the disk 64 passes from under roller 164, thespring 168 forces "the double armed lever downward, and the rod 158. isdrawn upon, and the sha'ft156 is given a partial rotation by the bellcrank 154, the other member'of-which draws on the link 153 and moves theslotted plate 121 inward. Simultaneously the lever 169 on the outer endof the shaft 156 pushes on the rod 171, and the lever 170 at its otherend partially rotates the shaft 157, in an opposite direction to theshaft 156, and the lever 155 on the shaft 157, draws on its link 153 bywhich the other slotted plate 121 is moved inward. As the plates 121carry the head blocks 120 which support the wipers 111, it will bereadily seen that the said wipers will be moved toward each otheragainst the ends of the box, and with a resilient contact effected bythe spring 160. The eye bolt 161 on the reverse movement of the leverarm 162 engages a collar 172, which is'pinned to the rod 158, and thusthe rod is lifted, and the outward movement of the end wipers effected.

The opposite end of the shaft 157 from the lever 170 carries a stopfinger 173 (see Fig. 1), which when the wipers are moved to the desiredpoint, or in contact with the ends of the box, strikes against the endof an adjustable screw 174, which is threaded to a lug on the side ofthe frame, and any further movement of the lever arm 162 is against thespring 160, the wipers not being affected thereby.

In boxes of the usual type, or such as have not extension bottoms, theinward movement of the wipers is not required, and to prevent thisinward movement of the wipers, the screw 174 is screwed down until itsend engages the stop finger 173, which will prevent rocking of the shaft157, and likewise of the shaft 156. The arm 163 of the double armedlever will however be moved just the same through engagement of theroller 164 with the cam disk 64, but the movement of the arm 163 will beagainst the spring 160 and the rod 158 will not be affected thereby.

1n the character of box wrapping work with blanks known as loose wrapwork, the same arrangement of wipers is used as for tight wrap work, asthe blank which does not contain any adhesive gum except along its outeredge portions has to be wrapped around the box just the same, and thegluing of the edges of the blank to the inner edges of the box takesplace in the second stage treatment portion of the machine.

The two plungers after they have held the box between them until theblank has been wrapped around the bottom, sides and ends of the box,separate and the upper plunger moves rapidly upward out of the box. Thisupper plunger however is provided with a box stripper 175 which remainsin the box and holds it down against the top of the lower plunger 11until the upper plunger moves up out of the box. This stripper comprisesa blade 175 which [its in a recess formed in the under side of theplunger 16, and it is arranged and op- 55 erates to hold and release thebox as .follows: 7

To the center of the blade the lower end of a rod 17 6 is secured, whichextends up through a slideway formed in the head block 14 of the arm 15,and the upper end of it is connected to one end of a coiled spring177,the opposite end of which is connected to the upper end of the plungerbar 13. One edge of the rod 176 of the stripper is provided with a notch178 which engages and locks to an L-shapedlatch 179 that is slidablymounted on top of the head block 14 of the fixed arm 15. This latch isprovided with a spring 180 that normally holdsit against the side of therod with sufficient resilient pulling pressure to cause it to'jump intothe notch 178 of the'rod when the rod is moved down with the plungersbar 13.

' The spring 177 of the rod is arranged with sufiicient contractivetension to normally hold the stripper blade up into its recess in thebottom of the plunger. Consequently it moves down with the plunger andrests inside of the bottom of the box when the plunger moves downagainst the bottom of the box and presses it down against the top of thebottom plunger, and the notch 178 in the rod is so relatively positionedto the spring latch that when. the plunger is down tight in the box andagainst the top of the lower plunger it looks the rod 176 of thestripper to the stationary head of the fixed arm 15, with the lower edgeof its blade resting against the bottom of the box. Then when theplunger starts upward the stripper stays down in and holds the boxagainst the lower plunger. This upward movement of the plunger and itsbar stretches the spring of the stripper. until the stripper is releasedfrom its latch. This is accomplished by a cam 181 which is secured tothe side of the plunger bar in a position to engage a roller 182 on thelatch when the plunger has moved out of the box, andmove the latch outof the notch ofthe strippers rod, which then releases the stripper andallows the con- ,tractive tension of the spring 137 which has beenstretched out by the upward travel of the plungers bar to jerk thestripper up into its recess in the plunger, thus fully releasing the boxfrom the action of the upper plunger and leaving it resting loosely ontop of the lower plunger, as all of the blank wipers after wrapping theblank against its sides and ends move back a short distance from it.Consequently the box wrapping action of thefirst stage treatment stationof our box wrapping machine is completed.

The box is then engaged by a transfer mechanism which strikes its outerend and pushes it ofi of the lower plunger and from the machine.

55 .changes mightbe made without departing from the spirit f. ourinvention.

repeated.-

' The operation ofour blank and box-assembling mechanismis'as followszfThe lower plunger is. moved upward a short distaneeand receives a gummedblank from the blank supplying means with its gumined' surface facing.upward. A box. is

then fed into the machine in the path of the 7 upper plunger, which thenmovesdown into itand carries it against the gummed surface ofthe blankand presses the box againstwit with a cushioning pressure, therebyfirmly gluing the blank to thebottom'of the box.

The operating cams of the plungers are timed-to move both plungers downtogether, and afterthe plungers come together and have gripped the boxand blanklbetween them they are 'moveddown togetherbetween the sidewipers, but the-upper" plunger movesin such relative movementi to thelower as will alwayskeep the box-gripped by a cushioning pressureagainst the blank and the to of the lower plungen i In this ox. andblan-kgripping relation, the plungers carry the box and blankdow-nbetween the side wipers to theendv of their plunger moves'upward on theupward stroke of its reciprocal movement, while the lower plunger]remains stationary. The stripper mechanism ofi-the upper plunger remainsdown in and against the bottom of the box. Consequently as theupperplunger moves upward, it leavesthe' box restingontop of the lowerplunger, from whichit is moved by a-transmittingdevicev which does notforma part of our-present invention. The

lower plunger then moves up and receives another 'gummed blank and r theoperation is Our invention provides simple -audieliable box and blankassembling plunger mechanism for assembling -the:,box Land blank inwrapping relation, and fee starting the wrapping of. the blank.aroundlthe bottom", sides, corners and ends-ofthe box, and while :wehaveillustrated the preferred, construction andrarrangement of our inventionwe do notzwish'to be limited to it, as many Having .described ourinvention. what we claim as new and desire to. secureby LettersPatentflsz' I 1. Ina -first'- stage wrapping machine, thecombination--with the table frame and the blank and boxv .supportingplungers, of" side wipers comprising wiper block supportingbrackets=provi'dedwvith aslideway, a-raokbar plate slidably mounted insaid slideway, a..blank'wiping block secured in said plate inoperativewiper relation 'to said blank and box and plunger's, 1a. toothed;segment endedrock arnrmeshingwith said rack bar,

a reciprocatingrod secured to the free end of said rock armby a.resiliently yielding pivotal COIIDQQtlOIl, and: meansincluding a cam-forreciprocat ng said rod.

2: 2. "In a first stage wrapping machine, the

a: combination with: a table frame and vertically reciprocating'blankand box'gripping and feeding plungers, of two oppositely ar rangedbrackets secured on. said tableythe blank and boxside wipers,-a,rack barreciprocally supportingisaid sidewipers and a segment .toothedended rockarm n mesh with said rack bar, a rod resiliently connect? ed to saidrock arm and arranged to permit said-side wipers to engage thesides ofthe blank and box with. a-fre'sili'ent cushioning pressure, and meansincluding a cam {oper ated lever-connected to said rock arm forreciprocatingsaid rod.- -:j 3. In a first stage wrapping mashing-thecombination with atable, vertically reciprjo eating blank vand boxgripping and feeding plungers, side wipers supportingbrackets on saidtable and a vblankand box side wip- I ing mechanism, of supports on saidbrackets, blank cornerwipers yieldingly. mountedion said arms'and meansincluding gearing for reciprocally moving. said corner wipers toIIIOVJ'agalIISt thecorner end portions, of said blank and box.

4. In a first stage boxwrapping machine, the'combination withjaframe andvertically reciprocating box and blank supporting plungers, of end wpers compr s ng suitable blocks, slide blocks for supporting saidwiperblocks, and head blocksfor supporting, said slide blocks, a rack vbarand asmooth bar pivotally connected to each head block, poweroperatedpinions in mesh with. the

saidrack-bars, frictional means-for retarding the movements ofthesinooth-bars in both directions of their movements, whereby theheadblocks are tilted .tocausethe wiper blocks to engage the ends of a,box, springs operating on said slide blocks; wh ch cause .a

yielding pressure offsaid, wipers, said head blocks beingtilted to causethe wipers-toengage theends; of the boxon theiriupward movements, and tomove them outof engagement therewith, on their .reversemovements.

5. In a firststage wrapping machine, the combination ofthe table frame,the vertically reciprocating gblank and box supports-plung r.- w thppp st y. a ge a k and box end vertically rec procating wipers comprisingpressure cushioning blocks, tilting means including a positive pushingbar n r ti nal dra gi ar a ass d Oppose the positive pushing bar fortilting said wipers, and means including cam actuatedv gearing forreciprocally moving and tilting said wiper simultaneously against theopposite ends of said box. p

6. In a first stage wrapping machine, the combination of the tableframe, and the vertically moving blankand box supporting gripping andfeeding plungers, with the side wipers arranged to wrap the sides of theblank against the opposite sides of the box simultaneously as saidblankand box are fed down between them, means including cam controlledgearing for reciprocating said sidewipers against said box, with thecorner wipers arranged to move to engage said blank and box at their"end corners the instant said plungers have fed said blank and box to theend of its downward movement between said side wipers, means foroperatively reciprocating said corner wipers to wrap the blankagainstthe end corners of said box, and the end wipers arranged to engage andmove vertically up against the opposite ends of said blank and boxsimule taneously and thereby wrap the ends of said blank against theends of said box, and resilient means connected to said side and cornerand end wipers whereby theyengage said blank and box with yieldingcushioning pressures, and means including cam actuated gearing for'operatively moving said end wipers. V

7 In a first stage box wrappingmachine, the combination with a tableand'vertically movable box and blank receiving plungers,

of'oppositely positioned standards ad ustably mounted on said table,side wipers slidably mounted on said standards, means for yieldinglypressing said side wipers against said box and vertically movable wipersadapted to engage the ends of the box on their upward movements, saidvplungers'being adapted to move the box and blank down between saidsidewipers.

8; In a first stage box wrapping machine, the combination with a tableand box and blank receiving plungers, of oppositely positioned standardsadjustably mounted on said table," sliding "members mounted on saidstandards,sidewipers secured to said members, rocking means for slidingsaid members, operat ng means res liently connected to said rockingmeans, corner wipers mounted on said standards and means for impartingto them a reciprocating movement, and vertically movable wipers forengaging the box 'ends on their upward movements, said 'plungersbeing'adapted to move said box and blank down'between said side wipers.

v-9. In a first stage box wrapping machine,

the combination with atable andbox and blank recelvlng plunger-s,ofstandards adustably mounted on opposite sides of said table, rackplatesslidably mounted onsaiid standards, bell.crank form of levershaving toothedsegments in engagement with said rack plates,pushrodsyieldingly connected to said levers, cam-operated means "for ,rais; ingsaid push' rods, side (wipers detachably connected to said rack plates,said plungers 7 being adapted to move the box and blank down betweensaid side wipers, and vertically movable wipers for the ends of saidbox. 7

. 10. In a first stage box wrapping machine,

the combination with a table, oppositely positioned standards mountedthereon, ,laterally movable side wipers mounted on said standards,vertically. movable end wipers mounted on said table, of blocks slidablymounted on said standards, corner wipers pivotally connected to-saidblocks, means for reciprocating said corner wipers, means for tiltingsaid, blocks to cause said corner wipers to swing inward on theirforward movements and outward on'their backward movements, andvertically movable plunge/1's for receiving a box and'bla'nk and movingthem downbetweensaid side wipers in position to be acted upon by the endand corner wipers, all of said wipers being adapted to engage a'box withresilient pressure.

. 11. In a first stage box wrapping machine,

the combination with a table, oppositely positionedistandards adjustablymounted on said table, vertically movable end: wipers mounted on saidtable and laterally movable sidewipers mounted on said. standards, of

in position to'be operated on by. said end and corner wipers, all ofsaid wipers; being adapted to engage a box with resilientpressure.

12.' In a first stage box wrappingmachine, the combination withendtandsidefwipers, of pivotally mounted corner wipers, means for reciprocatingsaid corner wipers, means for tilting them in one directionwhen movingforward, and in'the opposite direction when moving backward, and formsfor receiving a box'and blank-and passing them down between said side wiers, all i of said wipers being'arrangedto engage said: box withresilient pressure.

13. In a first stage box wrappingfmachine,

the combination withlaterally movable side wipers, of forms forreceivinga 'box and blank and movlng them down between said side wipersso'that the sides of saidblank will engage said wipers and be folded bythem up against the sides of the box, laterally movable wipers forWrapping portions up against the ends of the box and over said cornerportions, and means for tilting them away from the box ends on theirreverse movement, all of said Wipers being adapted to engage said boxwith resllient pressure.

In testimony whereof We affix our signatures in presence of tWoWitnesses.

MELVILLE E. PETERS. GEORGE H. FATH. ALBERT F. MILLER.

Witnesses:

G. SARGENT ELLIOTT, ADELLA M. Fownn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of laten ts,

Washington, D. G.

